[INFO] cloning repository https://github.com/UsairimIsani/link
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/UsairimIsani/link" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUsairimIsani%2Flink", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUsairimIsani%2Flink'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40f7f9892cd96cf0792ff8764d09c6b508f4417f
[INFO] checking UsairimIsani/link against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUsairimIsani%2Flink" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/UsairimIsani/link on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/UsairimIsani/link
[INFO] finished tweaking git repo https://github.com/UsairimIsani/link
[INFO] tweaked toml for git repo https://github.com/UsairimIsani/link written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/UsairimIsani/link already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b50b4d4f8a5d6462e3c450fb9eb49fd232949579102fd0c97fa1896369696de
[INFO] running `Command { std: "docker" "start" "-a" "9b50b4d4f8a5d6462e3c450fb9eb49fd232949579102fd0c97fa1896369696de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b50b4d4f8a5d6462e3c450fb9eb49fd232949579102fd0c97fa1896369696de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b50b4d4f8a5d6462e3c450fb9eb49fd232949579102fd0c97fa1896369696de", kill_on_drop: false }`
[INFO] [stdout] 9b50b4d4f8a5d6462e3c450fb9eb49fd232949579102fd0c97fa1896369696de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e10e49723d1ef4c832d4ce407984f5632577470b927f39f65cb79f18e01ec57
[INFO] running `Command { std: "docker" "start" "-a" "0e10e49723d1ef4c832d4ce407984f5632577470b927f39f65cb79f18e01ec57", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking link v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stdout] warning: struct is never constructed: `Graph`
[INFO] [stdout]  --> src/graph.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Graph<VertexId, E = (), V = ()> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/graph.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_vertex`
[INFO] [stdout]   --> src/graph.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn insert_vertex(&mut self, vid: VertexId, vertex: V) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_edge`
[INFO] [stdout]   --> src/graph.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn insert_edge(&mut self, from: VertexId, to: VertexId, edge: E) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/tree.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(value: T) -> Arc<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/tree.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert(parent: &mut Arc<Node<T>>, node: &mut Arc<Node<T>>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_value`
[INFO] [stdout]   --> src/tree.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn get_value(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `type_of`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn type_of<T>(_: T) -> &'static str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/graph.rs (1 fix)
[INFO] [stdout] warning: field is never read: `vertices`
[INFO] [stdout]  --> src/graph.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vertices: HashMap<VertexId, V>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `adjacency`
[INFO] [stdout]  --> src/graph.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     adjacency: HashMap<VertexId, Vec<(VertexId, E)>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_vertex`
[INFO] [stdout]   --> src/graph.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn insert_vertex(&mut self, vid: VertexId, vertex: V) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_edge`
[INFO] [stdout]   --> src/graph.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn insert_edge(&mut self, from: VertexId, to: VertexId, edge: E) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `type_of`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn type_of<T>(_: T) -> &'static str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking link v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: struct is never constructed: `Graph`
[INFO] [stdout]  --> src/graph.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Graph<VertexId, E = (), V = ()> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/graph.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_vertex`
[INFO] [stdout]   --> src/graph.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn insert_vertex(&mut self, vid: VertexId, vertex: V) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_edge`
[INFO] [stdout]   --> src/graph.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn insert_edge(&mut self, from: VertexId, to: VertexId, edge: E) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/tree.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(value: T) -> Arc<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/tree.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert(parent: &mut Arc<Node<T>>, node: &mut Arc<Node<T>>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_value`
[INFO] [stdout]   --> src/tree.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn get_value(&self) -> &T {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `type_of`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn type_of<T>(_: T) -> &'static str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `vertices`
[INFO] [stdout]  --> src/graph.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     vertices: HashMap<VertexId, V>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `adjacency`
[INFO] [stdout]  --> src/graph.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     adjacency: HashMap<VertexId, Vec<(VertexId, E)>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_vertex`
[INFO] [stdout]   --> src/graph.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn insert_vertex(&mut self, vid: VertexId, vertex: V) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_edge`
[INFO] [stdout]   --> src/graph.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn insert_edge(&mut self, from: VertexId, to: VertexId, edge: E) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `type_of`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn type_of<T>(_: T) -> &'static str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "0e10e49723d1ef4c832d4ce407984f5632577470b927f39f65cb79f18e01ec57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e10e49723d1ef4c832d4ce407984f5632577470b927f39f65cb79f18e01ec57", kill_on_drop: false }`
[INFO] [stdout] 0e10e49723d1ef4c832d4ce407984f5632577470b927f39f65cb79f18e01ec57